Which of the following compound contains ionic bond, covalent bond and datic bond?

Options

A. `NaCl`
B. `CaCl_(2)`
C. HBr
D. `NH_(4)Cl`

Explanation

To determine which compound contains an ionic bond, covalent bond, and dative bond, we will analyze the given compounds: NaCl, CaCl2, HCl, and NH4Cl.

### Step-by-Step Solution:

1. **Understanding Ionic Bonds:**
- Ionic bonds are formed between a metal (cation) and a non-metal (anion) through electrostatic attraction.
- Example: NaCl consists of Na+ (sodium ion) and Cl- (chloride ion).

2. **Analyzing NaCl:**
- NaCl is formed from Na+ and Cl-.
- This compound contains only ionic bonds because it is a classic example of an ionic compound.

3. **Analyzing CaCl2:**
- CaCl2 consists of Ca2+ (calcium ion) and Cl- (chloride ions).
- Like NaCl, it also contains only ionic bonds due to the presence of cations and anions.

4. **Understanding Covalent Bonds:**
- Covalent bonds are formed by the sharing of electrons between two non-metals.
- Example: HCl consists of H (hydrogen) and Cl (chlorine), which share electrons.

5. **Analyzing HCl:**
- HCl has a polar covalent bond due to the difference in electronegativity between H and Cl, meaning it has some ionic character, but it primarily consists of a covalent bond.

6. **Understanding Dative Bonds:**
- A dative bond (or coordinate bond) occurs when one atom donates both electrons to form a bond with another atom.
- Example: In NH4Cl, NH4+ (ammonium ion) has a dative bond with Cl-.

7. **Analyzing NH4Cl:**
- NH4Cl consists of NH4+ and Cl-.
- The bond between nitrogen and hydrogen in NH4+ is covalent (due to sharing of electrons).
- The bond between NH4+ and Cl- is ionic (due to electrostatic attraction).
- Additionally, the nitrogen atom donates a lone pair to form the NH4+ ion, creating a dative bond.

8. **Conclusion:**
- Among the compounds analyzed, NH4Cl is the only compound that contains an ionic bond (between NH4+ and Cl-), a covalent bond (between N and H), and a dative bond (the donation of a lone pair from N to H).

### Final Answer:
**NH4Cl contains an ionic bond, covalent bond, and dative bond.**

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